Trial reportFrontiers in rehabilitation sciences2025
Efficacy of botulinum toxin type A in myogenic temporomandibulardisorders: a single arm, prospective, pilot study.
Trial report in Frontiers in rehabilitation sciences, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Authors and funding
6 authors.
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Abstract
Background: Myogenous temporomandibular disorders (TMDs) is commonly associated with myofascial pain and functional limitations. Botulinum toxin type A (BoNT-A) has shown potential in relieving chronic muscular pain. Methods: In this single arm, prospective, pilot study, 25 patients diagnosed with myofascial TMDs received a single bilateral intramuscular injection of 50 units of BoNT-A. Assessments using the Visual Analog Scale (VAS), Chronic Pain Index (CPI), Jaw Functional Limitation Scale (JFLS-8), and Oral Health Impact Profile (OHIP-14) were performed at baseline, 6 weeks, and 12 weeks post-treatment. Results: Significant reductions in pain (VAS: 6.84 ± 1.03 to 0.84 ± 0.94) and CPI (61.87 ± 8.12 to 9.86 ± 4.46) were observed. Functional improvement (JFLS-8: 5.82 ± 0.56 to 1.08 ± 0.51) and enhanced quality of life (OHIP-14: 24.56 ± 8.39 to 5.96 ± 2.79) were also significant. No adverse effects were reported. Conclusions: BoNT-A showed promising results in reducing pain and improving function in patients with myofascial pain in Temporomandibular Disorders (M-TMDs). However, the single-arm design, small sample size, and short follow-up limit causal inference and external validity. These findings should be interpreted as preliminary.
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